mirror of
https://github.com/superseriousbusiness/gotosocial.git
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47 lines
769 B
Go
47 lines
769 B
Go
package msgpack
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import (
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"reflect"
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"sync"
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)
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var cachedValues struct {
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m map[reflect.Type]chan reflect.Value
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sync.RWMutex
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}
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func cachedValue(t reflect.Type) reflect.Value {
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cachedValues.RLock()
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ch := cachedValues.m[t]
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cachedValues.RUnlock()
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if ch != nil {
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return <-ch
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}
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cachedValues.Lock()
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defer cachedValues.Unlock()
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if ch = cachedValues.m[t]; ch != nil {
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return <-ch
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}
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ch = make(chan reflect.Value, 256)
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go func() {
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for {
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ch <- reflect.New(t)
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}
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}()
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if cachedValues.m == nil {
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cachedValues.m = make(map[reflect.Type]chan reflect.Value, 8)
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}
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cachedValues.m[t] = ch
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return <-ch
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}
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func (d *Decoder) newValue(t reflect.Type) reflect.Value {
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if d.flags&usePreallocateValues == 0 {
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return reflect.New(t)
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}
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return cachedValue(t)
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}
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